Calumniate \Ca*lum"ni*ate\, v. i. [imp. & p. p. {Calumniated};
p. pr. & vb. n. {calumniating}.] [L. calumniatus, p. p. of
calumniari. See {Calumny}, and cf. {Challenge}, v. t.]
To accuse falsely and maliciously of a crime or offense, or
of something disreputable; to slander; to libel.

Hatred unto the truth did always falsely report and
calumniate all godly men's doings. --Strype.

{Syn}. -- To asperse; slander; defame; vilify; traduce;
belie; bespatter; blacken; libel. See {Asperse}.